BARK1/GRK2 (ADRBK1) Antibody – Goat Polyclonal

The product of this gene phosphorylates the beta-2-adrenergic receptor and appears to mediate agonist-specific desensitization observed at high agonist concentrations. This protein is an ubiquitous cytosolic enzyme that specifically phosphorylates the activated form of the beta-adrenergic and related G-protein-coupled receptors. Abnormal coupling of beta-adrenergic receptor to G protein is involved in the pathogenesis of the failing heart. [provided by RefSeq, Jul 2008]

GRK2: a ubiquitous protein kinase of the GRK family. Phosphorylates the beta-2-adrenergic receptor and related G-protein-coupled receptors. Appears to mediate agonist-specific desensitization observed at high agonist concentrations. Expression level is consistently elevated in chronic human heart failure. Mouse models of severe heart failure have been used to demonstrate that inhibition of BARK1 with a peptide inhibitor is sufficient to increase mean survival, reduce dialation and improve cardiac function.

Protein type: Protein kinase, AGC; EC 2.7.11.15; Kinase, protein; Protein kinase, Ser/Thr (non-receptor); AGC group; GRK family; BARK subfamily

Chromosomal Location of Human Ortholog: 11q13.1

Cellular Component: cytoplasm; cytosol; membrane; plasma membrane

Molecular Function: alpha-2A adrenergic receptor binding; ATP binding; beta-adrenergic receptor kinase activity; Edg-2 lysophosphatidic acid receptor binding; G-protein coupled receptor kinase activity; protein binding; protein kinase activity

Biological Process: acetylcholine receptor signaling, muscarinic pathway; cardiac muscle contraction; desensitization of G-protein coupled receptor protein signaling pathway; entry of virus into host cell; heart development; negative regulation of striated muscle contraction; negative regulation of the force of heart contraction by chemical signal; peptidyl-serine phosphorylation; peptidyl-threonine phosphorylation; positive regulation of catecholamine secretion; receptor internalization; tachykinin signaling pathway; viral genome replication